There are total 13 hours or 780 minutes from 7am to 8pm. In words, this duration is equal to thirteen hours or seven hundred eighty minutes.
How many hours from
| 10AM to 6PM | 4PM to 6PM | 6PM to 7AM |
| 9AM to 7PM | 11AM to 4AM | 1AM to 3AM |
| 5PM to 11AM | 6AM to 5AM | 7AM to 7PM |
| 4AM to 7AM | 4AM to 9PM | 12AM to 2PM |
| 9PM to 12AM | 12PM to 7AM | 12AM to 4AM |
| 11PM to 11AM | 1AM to 5PM | 10AM to 3AM |
